I had Pulsair on my '85. Everything worked as it should so I never touched it until I removed the 3.5L for a 4.0L. The heads on the 4.0L didn't have the ports for the Pulsair Injection so I didn't have to worry. However, my advice would be to leave well enough alone if the engine is otherwise performing well. Removing the piping, you could damage the threads on the ports requiring you to helicoil them. Not the hardest job but, if you're not terribly experienced, why bother. Enjoy the truck. Mine was a 5 speed and I truly miss it. Having owned more Rovers than I can count, I have to say that was my favorite.